AutoZone and O'Reilly are two competitors in the retail automotive parts industry.

AutoZone O'Reilly

Average $2018$ Inventory $$3,912,878$ $$3,101,572$

$2018$ Sales $11,221,0779,536,428$

$2018$ Cost of goods sold $5,247,3314,496,462$

Average $2017$ Inventory $$3,757,001$ $$2,894,388$

$2017$ Sales $10,888,6768,977,726$

$2017$ Cost of goods sold $5,149,0564,257,043$

Use the information above to compute the companies' gross profit margin and days inventory outstanding for both years.

Round answers to one decimal place $($ex: $0\mathrm{.}2345=23\mathrm{.}5\%).$